<template>
    <div :class="{'hidden':hidden}" class="pagination-container">
        <el-pagination :background="background" :current-page.sync="currentPage" :page-sizes="pageSizes" :page-size.sync="pageSize" :layout="layout" :total="total"
            v-bind="$attrs" @size-change="handleSizeChange" @current-change="handleCurrentChange" />
    </div>
</template>

<script>
import { scrollTo } from '@/utils/scrollTo'

export default {
    name: 'Pagination',
    props: {
        total: {
            required: true,
            type: Number,
        },
        page: {
            type: Number,
            default: 1,
        },
        limit: {
            type: Number,
            default: 20,
        },
        pageSizes: {
            type: Array,
            default() {
                return [10, 20, 30, 50, 100]
            },
        },
        layout: {
            type: String,
            default: 'total, sizes, prev, pager, next, jumper',
        },
        background: {
            type: Boolean,
            default: true,
        },
        autoScroll: {
            type: Boolean,
            default: true,
        },
        hidden: {
            type: Boolean,
            default: false,
        },
    },
    computed: {
        currentPage: {
            get() {
                return this.page
            },
            set(val) {
                this.$emit('update:page', val)
            },
        },
        pageSize: {
            get() {
                return this.limit
            },
            set(val) {
                this.$emit('update:limit', val)
            },
        },
    },
    methods: {
        handleSizeChange(val) {
            this.$emit('pagination', { page: this.currentPage, limit: val })
            if (this.autoScroll) {
                scrollTo(0, 800)
            }
        },
        handleCurrentChange(val) {
            this.$emit('pagination', { page: val, limit: this.pageSize })
            if (this.autoScroll) {
                scrollTo(0, 800)
            }
        },
    },
}
</script>

<style scoped>
.pagination-container {
    background: #fff;
    padding-left: 15px;
    padding-right: 15px;
}
.pagination-container.hidden {
    display: none;
}
</style>
